Rainbow Sierpinski triangles

rainbowsierpinski.py

USE_256 = True
SYMBOL = "✿" # change if your font lacks the flower :(
import itertools
import shutil
import sys
import time
if USE_256: c, p = (9, 208, 11, 64, 27, 5), "38;5;"
else:       c, p = (41, 43, 42, 46, 44, 45), ""
w = shutil.get_terminal_size()[0]
n1 = w//2 + 1
n2 = w - n1 - 2
x = n1*[0] + [1] + n2*[0]
get = lambda i: x[i] if 0 <= i < len(x) else 0
ns = lambda i: get(i-1) + get(i+1)
for l in itertools.count():
    for k in range(len(x)):
        if x[k]: print("\033[" + p + str(c[((l//4+k)//6) % len(c)]) + "m" + SYMBOL + "\033[0m", end="")
        else:    print(" ", end="")
    print()
    x = [int(ns(i) == 1) for i in range(len(x))]
    time.sleep(0.1)